Add audio track to HLS file?

Is it possible to add an audio track to Content Meta-Data similar to subtitleTracks? I would like to be able to add an mp3 for visually impaired that is not embedded in the has file. Content Meta-Data allows you to manually set the audio track, but I can't find anywhere if I can add a new track.

Also, I am testing audio track switching with the following hls: https://wowzaec2demo.streamlock.net/vod-multitrack/_definst_/smil:ElephantsDream/ElephantsDream.smil/playlist.m3u8

While I can switch the audio tracks, the name for director's commentary which in hls in Commentary(eng) shows up as <English> providing no visual cues to the user how it is different from the default track. Does the hls need to be formatted differently for the name to show up correctly?